Project Serpo is the name of an alleged top-secret exchange program between the United States government and an alien planet called Serpo. Details of the alleged exchange program have appeared in several UFO conspiracy stories, including one incident in 1983 in which a man identifying himself as USAF SergeantRichard C. Doty contacted investigative journalist Linda Moulton Howe claiming to be able to supply her Air Force records of the exchange for her HBO documentary "The ET Factor" only to pull out without providing any evidence to substantiate his story, and one incident in 2005 when a series of emails were sent to a UFO discussion group run by Victor Martinez claiming that the project was real. Some variations on the conspiracy story state that the name Serpo is the nickname of the extrasolar planet. Other versions state that it is a mispronunciation of either Serponia or Seinu by US authorities involved in the project.
The first mention of a 'Project Serpo' was in a UFO email list maintained by enthusiast Victor Martinez. Various versions of the conspiracy theory circulated, and were later detailed on www.serpo.org. According to the most common version of the story, an alien survived a crash near Roswell in the later 1940s (see Roswell UFO incident). This alien was detained but treated well by American military forces, contacted its home planet and eventually repatriated. The story continues by claiming that this led to the establishment of some sort of relationship between the American government and the people of its home world – said to be a planet of the binary star system Zeta Reticuli.